Remarks
Earthquake Catalogs: https://scedc.caltech.edu/data/eq-catalogs.html
The Southern California Earthquake Data Center (SCEDC) operates at the Seismological Laboratory at Caltech and is the primary archive of earthquake data for southern California. The Southern California Earthquake Center (SCEC) is headquartered at the University of Southern California and is a community of scientists and specialists who actively coordinate research on earthquake hazards. The Data Center is a central resource of SCEC and is supported by SCEC, but it is a separate entity.